Patching device and process of making the same



4 April 8 1924. 1,489,885

H. H. GOVE PATC'HING DEVICE AND PROCESS OF MAKING THE SAME Filed April 7, 1921 r screw.

Patented Apr. 8, 1924.

HENRY H. GOVE, DECEASED, LATE OF BIDDEFORI), MAINE; BY CHARLOTTE IVL GOVE,

ADMINSTRATR-IX, OF BIDDEFORD, MAINE.

PATCHING DEVICE AND EROGESS OE MAKING THE SAME.

Application filed April 7, 1921. Serial No. 459,494.

To all whom it may concern:

Be it known that HENRY H. Govn, late of Biddeford, in the county of York and State of Maine, deceased, invented certain Tmprovements in Patching Devices and Proc esses of Making the Same, of which the following description, in connection with the accompanying drawings, is a specification. like reference characters on the drawings indicating like parts in the several figures.

This invention relates to patching devices designed especially for use in stopping leaks in rubber boots and other rubber footwear, rubber hot water bottles and similar articles. The invention is especially concerned with patching devices of the general character disclosed in Patent No. 735,753, granted Au gust 11, 1903, and it aims to improve both the construction of devices of this character and also the processes of nianufacturing them with a View to reducing the manufacturing expense and to improving the quality of the article.

The nature of the invention will be readily understood from the following description when read in connection with the accompanying drawings, and the novel features will be particularly pointed out in the appended claims.

Referring now to the drawings,

Figure 1 is aperspective view of a special screw which forms a part of the patching device;

Fig. 2 is a cross sectional view of the patching device; and

Fig. 3 is a plan view of said device.

The construction shown comprises a plate 2 which, since it is intended to go in the interior of the article to be patched, may be designated as the inner or lower plate. This plate may be of any suitable outline but usually is either circular or approximately elliptical in shape. At its central portion it is provided with an aperture which is countersunk as clearly shown in Fig. 2. Projecting through this aperture is a screw 4 having a tapered unslotted head 5 which fits the counter-sink in the plate, and also having an unthreaded shank portion 6 which is held securely in the aperture. An upper or outer plate 8, which is concaved with reference to the lower plate, issuperposed on the latter plate and is provided with a central hole to receive loosely the threaded shank of the A nut 10 is threaded on this inadeoif sheetsteel and the upper plate 8 is lacquered or apanned and the lower plate also is sometimes treated in this manner. The screw preferably is madeof brass.

According to the preferred process of manufacturing the device, the lower plates 2 are punched out of sheet metal, the central aperture being formed simultaneously with the punching operation. The screws 4 may be manufactured very economically in an automatic screw machine, and the unthreaded shank portions 6 are made very slightly larger in diameter, say two or three one thousandths of an inch, than the diameter of the aperture in the plate 2. The screw is then inserted in the hole in the plate, this hole at this time usually being somewhat rough due to the process of manufacture, and the plate is pressed down on the shank so that the head 5 of the screw fills the counter-sink in the plate, this operation usually being performed in a suitable press which strikes a quick blow on the plate and forces it down solidly on to the head of the screw, the die used in the press fitting fairly snugly about the screw. Due to the fact that the shank 6 was larger originally than the aperture, this operation secures the screw and the plate firmly together. The upper plate and tlie'nut may then be assembled with the lower plate and the article is ready to be shipped.

In using the device, as for instance in patching the upper of a rubber boot, the screw 4 is forced through the hole in the boot B, Fig. 2, which it is desired to stop, the plate 2 being placed on the inside of the boot. The outer plate 8 is then placed on the screw and the nut 10 is turned up solidly by the wrench 12. This pulls the plates 2 and 8 firmly together thus squeezing the stock between the margin of the lower plate 2 and the lower surface of the upper plate 8 and forming tight joint at this pqint. The progear-tag errier-i of the 4; then be cut off and filed down substantially flush uniting the screw Lwit-h the lower plate 2,

and that it produces an article of improved quality since the necessity forsolder or any other means for securing these two parts together through a fused union is avoided. [it the same time a very firm union is formed between the screw 4e and the plate 2, the burr on the edge of the aperture in the plate biting firmly into the shank of the screw.

Having thus described my invention what I desire to claiin-as new is:

1. A patching device of the character described comprising, in conibinationfa plate having an aperture therethrough, a screw having a head bearingon one face ofs aid plate and provided with an unthreade'd shank portion positioned in said'aperture and-frictionally securedto said plate, a second plate having a hole ltheretlirough' to receive said screw, and a mit threadedon said screw to force the secondplate toward the first plate.

2. A patching device of the character described comprising, in co1nbination,a plate portion of said having a counter-sunk hole formed therethrough, a screwhaving a tapered head fitting in said counter-sink and having an unthreaded shank portion frictionally secured in said plate, a second plate superposed on the first plate and concaved with reference to the first plate, said second plate having a hole therethrough to receive the threaded screw, and a nut t readed on said screw to force said plates toward each other.

3. That improvement in the pa. making patching devices or the ch scribed which consists in providing plate with a hole theretl'irough, providing a screw with an .unthreaded shank portion :-.djaccnt to the head thereof, said shank portion be ing slightly larger in dian'ieter than said hole, and then pressing said plate on said shank p0 tion whereby said'screw and plate will he frictionally secured together.

In testimony whereof 1 have signed my name to this specificationin the presence of two subscribing witnesses.

i i CHARUOTTE M. GOVE, r11(ii/hintstmtrrofHcmy H. Gave, deceased.

Witnesses Dl'l. MOORE, R. M. Moonn. 

